Modified Carbon Improved Corrosion Resistance.
Patent, Filed 15 Jan 93, patented 27 Feb 96,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
Graphite or carbon particles with a graphitic skin are intercalated with a compound including an oxidized form of a metal and then reduced in a hydrogen atmosphere. This process reduces the driving force for the galvanic reaction between the particles and active metals in aqueous environments. The particles may be present as a reinforcement for a metal matrix e.g.. graphitealuminum metal matrix composites or as a reinforcement for a non-metallic material e.g., graphitepolyimide, graphitepolyester or graphitecyanate composites. In the latter case, the composite is adjacent to a metal in a structure. By way of example, the graphite or carbon particle may he a fiber, the metal subject to attack may be aluminum or magnesium, and the intercalation compound may be NiCl2.
- Inorganic Chemistry
- Physical Chemistry
- Polymer Chemistry
- Laminates and Composite Materials
- Properties of Metals and Alloys